Datexel Simply Modbus User guide

Using Simply Modbus to read Temperature with
Modbus Slave ermocouple module.
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Set up Simply Modbus.
1. Download demo or purchase the RTU Simply
Modbus Master from www.simplymodbus.ca.
2. Install and run the Soware.
1. Connect 24 Vdc to Terminal I and J.
2. Connect RS485 from the PC to A (D-) and B
(D+)
3. Connect a thermocouple or temperature Cali-
brator to Channel 0.
4. If you do not know the ermocouple Modbus
Slave connect the short on INIT and recycle
the power. is will set all the communication
parameters to the following.
• Baud Rate 9600.
• Data bits 8.
• Stop Bits 1.
• Parity None.
Set up DAT3016.
Setting the Communication Port
on the Simply Modbus Soware.
1. e mode of Communication is RTU.
2. e Com port of the PC is 3. is could be
dierent.
3. e Baud rate is 9600.
4. e Data bits is 8.
5. e Stop bits is 1.
6. e Parity is none.

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Setting the Slave ID and Read
Registers.
1. e Slave ID on the DAT3016 is 1.
2. e Register of Channel 0 is 40015.
3. As the DAT3016 is a 4 channel thermocouple
Modbus Slave we would like to read all 4 chan-
nels, so we type 4 in No. of Regs.
4. e oset is 40001.
More information on the register tables are in the
User Guide.
Sending the Command and
Receiving the Temperature.
1. Click Send.
2. If all is good the DAT3016 should return the
Temperature.
3. e result is a temperature of 254 which equals
25.4’C.